2. You can go to the following points in turn (-4, -2), (-7, -2), (-7, 7), (-3, 7), (-3, 4).
3. After the rectangles A, B, C and D are shifted to the left by two unit lengths, the coordinates of vertices A, B, C and D become (-5,2), (-5,2), (1, 2), (1, 2) respectively; After the coordinates of rectangles A, B, C and D are moved up by three unit lengths, the coordinates of vertices A, B, C and D become (-3,5), (-3, 1), (3, 1) and (3,5) respectively. Sketch.
4.C
5. Sketch. The side length of the small square in the scale diagram represents the length of 50 meters. A plane rectangular coordinate system is established with the teaching building as the origin, the east direction as the positive direction of X axis and the north direction as the positive direction of Y axis. The positions of the teaching building, library, school gate, experimental building and national flagpole are (0,0), (-50, 150), (-300,0) and (0,65438+) respectively.
6.2 class is 1 southwest of class 40? , 5km 1 level is 40 degrees northeast of level 2. , 5 kilometers away.
7. The duckling moves 2 unit lengths from A to the right, then moves up 1 unit length to B., then translates 3 unit lengths from B to C, finally translates 2 unit lengths from C to the right, and then translates 1 unit length to D..
8.A 1(3,6),B 1( 1,2),C 1(7,3)
9. The area of triangle ABC is 10.
10.A'(2,0),B'(5,0),C'(5,),D'(2,)
1 1.N(x,y)
12. sketch.